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Technical Data Sheet
PartsTable / COMPONENT / X3372
X3372 ✓ Verified by PartsTable
— · TAPERED BEARING
WHAT YOU NEED TO KNOW
Cup and cone sold separately — confirm both needed Timken series numbers indicate dimensions
Cup and cone NOT sold as set — verify order
PRODUCT OVERVIEW

The BEARING,ROLLER,TAPERED is a the manufacturer tape media or drive component used in enterprise backup, archival, and disaster recovery environments. Key specifications include material: STEEL OVERALL, cup_width: 1.5625 INCHES NOMINAL IN, bore_diameter: 1.4375 INCHES NOMINAL IN, overall_width: 2.1875 INCHES NOMINAL IN, standout_width: 0.3125 INCHES NOMINAL IN, style_designator: STRAIGHT BORE, DOUBLE CUP, SINGLE CONES, STEEP ANGLE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3110-00-151-9553, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
X3372
NSN: 3110-00-151-9553
FSC: 3110
CAGE: 79410 — LIBERTY VENTURES INTI, LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
cup_width1.5625 INCHES NOMINAL IN
bore_diameter1.4375 INCHES NOMINAL IN
overall_width2.1875 INCHES NOMINAL IN
standout_width0.3125 INCHES NOMINAL IN
special_featuresOPERATING TEMPERATURE NOT TO EXCEED 121 DEG C/250 DEG F; OIL HOLE AND GROOVE IN CUP; 0.0040 IN. MIN,0.0060 IN. MAX BENCH LATERAL IN
style_designatorSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES, STEEP ANGLE
cone_corner_radius0.0310 INCHES NOMINAL IN
backface_corner_radius0.0620 INCHES NOMINAL IN
overall_outside_diameter3.6250 INCHES NOMINAL IN
standard_tolerance_designationAFBMA CLASS 4
NSN3110-00-151-9553
COMPONENT DIAGRAM
TAPERED ROLLER BEARING — CUP & CONE ASSEMBLY CAGE CUP BORE CONE OD: — · BORE: — · WIDTH: — Single Row · PN: X3372 · OEM ⚠ VERIFY BEFORE ORDERING Cup and cone sold separately — verify you are ordering BOTH parts or the correct component. Always replace cup and cone together — mismatched wear = premature failure ✓ BROKER TIP Taper angle determines axial load capacity. Steeper angle = higher axial load rating. Timken series numbers indicate dimensions — cross-reference carefully PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
OVERALL OUTSIDE DIAMETER: 3.6250 INCHES NOMINAL IN
•
CUP WIDTH: 1.5625 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: STRAIGHT BORE, DOUBLE CUP, SINGLE CONES, STEEP ANGLE
•
CONE CORNER RADIUS: 0.0310 INCHES NOMINAL IN
•
STANDARD TOLERANCE DESIGNATION: AFBMA CLASS 4
TYPICAL APPLICATIONS
  • Long-term data archival and compliance retention
  • Offsite backup and disaster recovery
  • Air-gapped ransomware protection
  • Cold storage tier for infrequently accessed data
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL OUTSIDE DIAMETER3.6250 INCHES NOMINAL IN
CUP WIDTH1.5625 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SPECIAL FEATURESOPERATING TEMPERATURE NOT TO EXCEED 121 DEG C/250 DEG F; OIL HOLE AND GROOVE IN CUP; 0.0040 IN. MIN,0.0060 IN. MAX BENCH LATERAL IN
STYLE DESIGNATORSTRAIGHT BORE, DOUBLE CUP, SINGLE CONES, STEEP ANGLE
OVERALL WIDTH2.1875 INCHES NOMINAL IN
CONE CORNER RADIUS0.0310 INCHES NOMINAL IN
STANDARD TOLERANCE DESIGNATIONAFBMA CLASS 4
STANDOUT WIDTH0.3125 INCHES NOMINAL IN
BORE DIAMETER1.4375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
520-SSInterchangeable
interchangeable cross-reference
interchangeable
1122531Interchangeable
interchangeable cross-reference
interchangeable
520Interchangeable
interchangeable cross-reference
interchangeable
50FK-1614Interchangeable
interchangeable cross-reference
interchangeable
28303Interchangeable
interchangeable cross-reference
interchangeable
50K-1614Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is X3372?
X3372 is a BEARING,ROLLER,TAPERED.
What parts can replace X3372?
There are 28 known substitutes for X3372: 520-SS, 1122531, 520 and 25 more. Substitute compatibility should be verified for your specific system.
Is X3372 still available?
X3372 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026